Question

10 years ago the age of sarla mother is 4 times to the age of sarla.after 10 years the age of mother is double to the age of daughter.find the ratio of their present age

Answer 1

10years ago mother=4x,sarla=x
4x+10=2(x+10) // after 10 years
4x+10=2x+20
4x-2x=20-10
2x=10
x=5
mother 4(5)=20
mother age present =4(5)+10=30
sarla=5+10=15
ratio=15:30
=1:2 is answer